*{
  margin: 0;
  padding: 0;
}
html,body,#root,.wrap{
  width: 100%;
  height: 100%;
}
.main-page{
  display: flex;
  flex-direction: column;
}
.main-page main{
  flex: 1;
  overflow-y: auto;
}
.main-page footer{
  width: 100%;
  height: 50px;
  display: flex;
  line-height: 50px;
}
.main-page footer a{
  text-decoration: none;
  color:  black;
  flex: 1;
  text-align: center;
}
.main-page footer a.active{
  background: royalblue;
  color: white;
}
.list{
  width: 100%;
  height: 100%;
  display: flex;
 flex-wrap: wrap;
 justify-content: space-between;
 align-items: center;
}
.item button{
  width: 30px;
  height: 30px;
}
.dl{
  display: flex;
  align-items: center;
  /* justify-content: space-between; */
}
.dl dt{
  flex: 1;
  text-align: center;
}
.dl dd{
  flex: 2;
  display: flex;
  align-items: center;
  justify-content: space-around;
}
.dl dd button{
  width: 30px;
  height: 30px;
}
